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Old November 30, 2012, 07:37 PM   #5
James K
Join Date: March 17, 1999
Posts: 24,129
The critical point is "where the rifling ends". That point must be even or the bullet comes out of the barrel unevenly and accuracy goes to heck.

As for anywhere else, there is no effect. There is no way rust between the hole in the barrel and the outside of the crown could affect anything.

Jim K
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